Public bug reported:
Binary package hint: spim
Ubuntu: Ubuntu 8.10
Spim: 7.4-0ubuntu1
When tested with the -bare option, the following code could will produce
a result of 0xCAFE for $t0 and 0x03 for $t1. Yet, with a simple analysis
of the code, it is clear that it's impossible to have both at the same
time. My claim is sustained by the fact that after the beq instruction
is triggered, the delay slot is already being executed, therefore j is
also triggered. But the ori $t0, $zero, 0xCAFE statement should not be
triggered (in j's delay slot) if the jump was made to endbeq. Both
cannot happen. Best regards.
.text
.globl main
main: ori $t0, $zero, 0xFACE
ori $t1, $zero, 0x0000
beq $zero, $zero, endbeq
j endj
ori $t0, $zero, 0xCAFE
endbeq: ori $t1, $t1, 0x01
endj: ori $t1, $t1, 0x02
** Affects: spim (Ubuntu)
Importance: Undecided
Status: New
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Strange behavior with -bare option
https://bugs.launchpad.net/bugs/393072
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